Some chainsaws are packed with high-spec features, but don't start easily and struggle to slice through hard wood. Others are basic, but start immediately and cut through even the thickest logs easily ...
Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...
1 School of Journalism and Communication, Wuhan Sports University, Wuhan, China 2 School of Martial Arts, Wuhan Sports University, Wuhan, China Introduction: Health Qigong is rooted in Chinese ...
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